package com.atguigu.gulimall.cart.controller;

import com.atguigu.gulimall.cart.interceptor.CartInterceptor;
import com.atguigu.gulimall.cart.service.CartService;
import com.atguigu.gulimall.cart.vo.Cart;
import com.atguigu.gulimall.cart.vo.CartItem;
import com.atguigu.gulimall.cart.vo.UserInfoTo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import java.util.List;
import java.util.concurrent.ExecutionException;

@Controller
public class CartController {

    @Autowired
    CartService cartService;

    @GetMapping("/currentUserCartItems")
    @ResponseBody
    public List<CartItem> getCurrentUserCartItems(){

        return cartService.getUserCartItems();
    }

    /**
     * 购物车当前页
     * @param model
     * @return
     * @throws ExecutionException
     * @throws InterruptedException
     */
    @GetMapping("/cart.html")
    public String cartListPage(Model model) throws ExecutionException, InterruptedException {
        //1，快速得到用户信息
        //UserInfoTo userInfoTo = CartInterceptor.threadLocal.get();

        Cart cart = cartService.getCart();
        model.addAttribute("cart",cart);

        return "cartList";
    }

    /**
     * 添加购物车到商品
     * @param skuId
     * @param num
     * @return
     * @throws ExecutionException
     * @throws InterruptedException
     */
    @GetMapping("/addToCart")
    public String addToCart(@RequestParam("skuId") Long skuId,
                            @RequestParam("num") Integer num,
                            RedirectAttributes re) throws ExecutionException, InterruptedException {

        cartService.addToCart(skuId,num);
        re.addAttribute("skuId",skuId);
        return "redirect:http://cart.gulimall.com/addToCartSuccess.html";
    }

    /**
     * 勾中商品
     * @param skuId
     * @param check
     * @return
     */
    @GetMapping("/checkItem")
    public String checkItem(@RequestParam("skuId") Long skuId,
                            @RequestParam("check") Integer check){

        cartService.checkItem(skuId,check);
        return "redirect:http://cart.gulimall.com/cart.html";

    }

    /**
     * 修改购物车商品数量
     * @param skuId
     * @param num
     * @return
     */
    @GetMapping("/countItem")
    public String changeItemCount(@RequestParam("skuId") Long skuId,
                                  @RequestParam("num") Integer num){

        cartService.changeItemCount(skuId,num);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("skuId") Long skuId){

        cartService.deleteItem(skuId);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    /**
     * 跳转到成功页
     * @param skuId
     * @param model
     * @return
     */
    @GetMapping("/addToCartSuccess.html")
    public String addToCartSuccessPage(@RequestParam("skuId") Long skuId,Model model){

        CartItem item = cartService.getCartItem(skuId);
        model.addAttribute(item);
        return "success";
    }
}
